Used Harbinger VS18 Powered Subwoofer

2,400 watts of Class-D power delivers clean bass with no distortion Maximum SPL output of 134dB ensures powerful sound for any venue Built-in DSP provides effortless tuning for perfect room optimization Sub Cut feature allows seamless integration with Harbinger speaker systems Adjustable crossover control ensures compatibility with any full-range speaker Time Aligning Delay combats phase issues for precise bass performance Transparent limiter keeps lows tight while protecting against overloading Clip LEDs prevent distortion by monitoring input signal levels Front and rear limiter LEDs indicate maximum volume has been reached Built-in caster wheels make transportation easy for gigs and events